I have 5 DVD-R's that can burn at 4x and 50 DVD-R's that can burn at 8x...But when I use the 8x DVD-R's nero only says it can burn at 4x, it doesn't give me a higher option, it is registered aswell, so it's not a demo...anyone know how to get it to burn 8x?

And my burner is rated at 8x for DVD-R's